Google’s Material Design documents have been updated for September and feature new Android Oreo-related guidelines, as well as a section on how apps should behave when there is no internet access.

Aimed at 8.0 Oreo, there are several new guidelines on how to bring apps up-to-date with the latest version of Android. There a section on how to create “Adaptive Icons” that provide better integration with certain OEM launchers.

Meanwhile, Google goes in-depth on taking advantage of the new notification features introduced in Oreo. The section discusses notification channels in 8.0 that allow users to better control alerts. Google notes how to determine importance levels and how to group notifications together.